WanderWang 45fd45103d fix: _chromium_installed() now checks AGENT_BROWSER_EXECUTABLE_PATH and system Chrome ...

Before this fix, _chromium_installed() only searched Playwright-style
chromium-* / chromium_headless_shell-* directories, which meant users
with system Chrome or AGENT_BROWSER_EXECUTABLE_PATH configured still
had all browser_* tools gated.

Now checks three sources in priority order:
1. AGENT_BROWSER_EXECUTABLE_PATH env var (if set and points to a real binary)
2. System Chrome/Chromium via shutil.which() (google-chrome, chromium-browser, chrome)
3. Playwright browser cache (existing logic, kept as fallback)

Closes #19294

2026-05-04 01:42:23 -07:00

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